I went to appliancepartspros.com and searched "dishwasher rack rollers" and found mine immediately using only the make of the machine. It took me another 5 minutes to order the parts and check out.
I received the parts in two days using the most economical shipping method. It took less than ten minutes to make my dishwasher as good as new!
A very simple job made more simple by using appliancepartspro.com.

Turns out the bottom sprayer arm had somehow become lodged against the bottom heating element resulting in a sizable hole on the underside of the arm. This caused water to shoot directly at the door and leak out. Appliance Parts Pros had the replacement spray arm and shipped it super quick. My very old dishwasher works like a pro again!